/*
** libproj -- library of cartographic projections
**
** Copyright (c) 2003, 2006   Gerald I. Evenden
*/
static const char
LIBPROJ_ID[] = "Id";
/*
** Permission is hereby granted, free of charge, to any person obtaining
** a copy of this software and associated documentation files (the
** "Software"), to deal in the Software without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Software, and to
** permit persons to whom the Software is furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be
** included in all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <lib_proj.h>
#include <stdio.h>
#include <string.h>
  paralist * /* create parameter list entry */
proj_mkparam(char *str) {
  paralist *New;

  if ((New = (paralist *) malloc(sizeof(paralist) + strlen(str)))) {
    New->used = 0;
    New->next = 0;
    if (*str == '+')
      ++str;
    (void)strcpy(New->param, str);
  }
  return New;
}
  PROJ_PVALUE /* test for presence or get parameter value */
proj_param(paralist *pl, const char *opt) {
  int type;
  unsigned l;
  PROJ_PVALUE value;

  type = *opt++;
  /* simple linear lookup */
  l = (unsigned)strlen(opt);
  while (pl && !(!strncmp(pl->param, opt, l) &&
    (!pl->param[l] || pl->param[l] == '=')))
    pl = pl->next;
  if (type == 't')
    value.i = pl != 0;
  else if (pl) {
    pl->used |= 1;
    opt = pl->param + l;
    if (*opt == '=')
      ++opt;
    switch (type) {
    case 'i':  /* integer input */
      value.i = atoi(opt);
      break;
    case 'd':  /* simple real input */
      value.f = atof(opt);
      break;
    case 'r':  /* degrees input */
      value.f = proj_dmstor(opt, 0);
      break;
    case 's':  /* char string */
      value.s = opt;
      break;
    case 'b':  /* boolean */
      switch (*opt) {
      case 'F': case 'f':
        value.i = 0;
        break;
      case '\0': case 'T': case 't':
        value.i = 1;
        break;
      default:
        proj_errno = -8;
        value.i = 0;
        break;
      }
      break;
    default:
bum_type:  /* note: this is an error in parameter, not a user error */
      fprintf(stderr, "invalid request to proj_param, fatal\n");
      exit(1);
    }
  } else /* not given */
    switch (type) {
    case 'b':
    case 'i':
      value.i = 0;
      break;
    case 'd':
    case 'r':
      value.f = 0.;
      break;
    case 's':
      value.s = 0;
      break;
    default:
      goto bum_type;
    }
  return value;
}
/* Revision log:
** Log: proj_param.c
** Revision 1.1  2008-11-07 16:41:15  jeff
** ENH: Adding a 2D geoview. Adding the geographic projection library libproj4
** to Utilities. Updating the architecture of the geospatial views. All
** multi-resolution sources are now subclasses of vtkGeoSource. Each source
** has its own worker thread for fetching refined images or geometry.
** On the 3D side, vtkGeoGlobeSource is an appropriate source for vtkGeoTerrain,
** and vtkGeoAlignedImageSource is an appropriate source for
** vtkGeoAlignedImageRepresentation. On the 2D side, vtkGeoProjectionSource is an
** appropriate source for vtkGeoTerrain2D, and the image source is the same.
**
** Revision 3.1  2006/01/11 01:38:18  gie
** Initial
**
*/